      * {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
      }

      html, body {
        font-family: 'Helvetica Neue', 'Helvetica', 'Arial', 'sans-serif';
        font-weight: 400;
        font-size: 16px;
        color: #333;
      }

      .center-text {
        text-align: center;
      }

      main {
        margin-top: 100px;
        padding: 20px;
      }

      img.logo {
        display: block;
        margin: 0 auto;
        max-width: 100%;
        margin-bottom: 30px;
      }

      h2 {
        font-size: 2em;
        font-weight: 100;
      }

      footer {
        position: absolute;
        bottom: 0;
        left: 0;
        right: 0;
        padding: 20px;
      }

      footer p {
        font-weight: 300;
        font-size: 1.0em;
      }

      a {
        color: #31D8A0;
        text-decoration: none;
      }

      a:hover,
      a:focus {
        color: #31D8A0;
      }